package struct;

import java.util.Scanner;

public class IfDemo03 {
    public static void main(String[] args) {
        Scanner scanner=new Scanner(System.in);

        System.out.println("请输入成绩：");
        int  score= scanner.nextInt();

        if(score==100){
            System.out.println("恭喜满分");
        }else if(score<=100&&score>=90){
            System.out.println("A级");
        }else if(score<=90&&score>=80){
            System.out.println("B级");
        }else if(score<=80&&score>=70){
            System.out.println("C级");
        }else if(score<=70&&score>=60){
            System.out.println("D级");
        }else if(score<60&&score>=0) {
            System.out.println("不及格");
        }else{
            System.out.println("成绩不合法");
        }


        scanner.close();
    }
}
